I'd like to pass env vars into the exec command.
So far I have tried the following
SOME_VAR="A String"
kubectl exec -it a-pod-name -- sh -c 'env NEW_VAR=$SOME_VAR; echo $NEW_VAR > some-file-name.txt'I realise I could use kubectl cp if I wanted to copy files, but that doesn't fit my use case.
You need to put the command in double quotes and it will work like following:
kubectl exec -it a-pod-name -- sh -c "env new_var=$var; echo $new_var > some-file-name.txt"The reason behind that is bash doesn't extract variable into values in single quotes and hence you need to use double quotes.